A QoS Enhancement Scheme through Joint Control of Clear Channel Assessment Threshold and Contending Window for IEEE 802.11e Broadcasting

Table 4

Setting of the contending window for different message priorities.

i	State of low channel utilization ratio		State of intermediate channel utilization ratio		State of high channel utilization ratio
	0	3	7	7	15	15	31
1	7	15	15	31	31	63
2	15	31	31	255	255	1023
3	15	31	31	255	255	1023